Cell CycleCell Cycle ProteinsCell Cycle CheckpointsS PhaseG1 PhaseMitosisCell DivisionCell LineCyclinsMolecular Sequence DataDNA-Binding ProteinsG2 PhaseBase SequenceMenstrual CycleMutationApoptosisCyclin-Dependent Kinase Inhibitor p21DNA DamageCell ProliferationRetinoblastoma ProteinCyclin-Dependent Kinase Inhibitor p27G2 Phase Cell Cycle CheckpointsHeLa CellsProtein-Serine-Threonine KinasesCell Line, TumorReplication Protein ANuclear ProteinsCDC2 Protein KinasePhosphorylationTranscription, GeneticG0 PhaseCyclin-Dependent Kinase 2Tumor Suppressor Protein p53Cell NucleusCells, CulturedDNAAmino Acid SequenceSaccharomyces cerevisiaeG1 Phase Cell Cycle CheckpointsGenes, cdcCyclin EFlow CytometryInterphaseCyclin D1DNA, ViralPlasmidsCyclin ATranscription FactorsTime FactorsCyclin BViral ProteinsSaccharomyces cerevisiae ProteinsDNA ReplicationSignal TransductionProtein BindingTumor Suppressor ProteinsModels, BiologicalTumor Cells, CulturedHydroxyureaRNA, MessengerProliferating Cell Nuclear AntigenCyclin-Dependent Kinase 4RNA, ViralCDC2-CDC28 KinasesDNA Replication TimingGene Expression RegulationBromodeoxyuridinecdc25 PhosphatasesDNA RepairTransfectionE2F Transcription FactorsS Phase Cell Cycle CheckpointsEstrous CycleSchizosaccharomycesBlotting, WesternCell SurvivalDNA HelicasesRepliconProtein KinasesFibroblastsCyclin B1HistonesKineticsCell DifferentiationPromoter Regions, GeneticFungal ProteinsReplication Protein CChromatinE2F1 Transcription FactorRNA, Small InterferingCyclin DDown-RegulationAphidicolinCitric Acid CycleGene Expression Regulation, ViralEscherichia coliRNA InterferenceDNA PrimersSchizosaccharomyces pombe ProteinsGenome, Viral